<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<a style="border: 1px solid red;height: 100px;display: block;text-align: center;line-height: 100px" href="">bb</a>
<div style="border: 1px solid #999999;position: relative;height:100px;align-items: center;">
    <ul style="margin: 0;float: left;">
        <li style="position:relative;float: left;display: block">11</li>
        <li style="position:relative;float: left;display: block">11</li>
        <li style="position:relative;float: left;display: block">11</li>
        <li style="position:relative;float: left;display: block">11</li>
    </ul>
</div>
</body>
</html>